CVE-2026-28991
High
Description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.8.2, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. An app may be able to cause a denial-of-service.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Apple Ipados
PublishedMay 11, 2026
First seenMay 11, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- apple ipados26.5 or later
- apple iphone_os26.5 or later
- apple macos26.5 or later
- apple tvos26.5 or later
- apple visionos26.5 or later
- apple watchos26.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple ipados | v < 26.5 | 26.5 |
| apple iphone_os | v < 26.5 | 26.5 |
| apple macos | 26.0 ≤ v < 26.5 | 26.5 |
| apple tvos | v < 26.5 | 26.5 |
| apple visionos | v < 26.5 | 26.5 |
| apple watchos | v < 26.5 | 26.5 |
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